def pix2vec(nside,ipix,nest=False):
"""pix2vec : nside,ipix,nest=False -> x,y,z (default RING)
"""
if nest:
return pixlib._pix2vec_nest(nside,ipix)
else:
return pixlib._pix2vec_ring(nside,ipix)
def pix2vec(nside, ipix, nest=False):
"""pix2vec : nside,ipix,nest=False -> x,y,z (default RING)
"""
if nest:
return pixlib._pix2vec_nest(nside, ipix)
else:
return pixlib._pix2vec_ring(nside, ipix)
def pix2vec(nside, ipix, nest=False):
"""pix2vec : nside,ipix,nest=False -> x,y,z (default RING)
Parameters
----------
nside : int, scalar or array-like
The healpix nside parameter, must be a power of 2
ipix : int, scalar or array-like
Healpix pixel number
nest : bool, optional
if True, assume NESTED pixel ordering, otherwise, RING pixel ordering
Returns
-------
x, y, z : floats, scalar or array-like
The coordinates of vector corresponding to input pixels. Scalar if all input
are scalar, array otherwise. Usual numpy broadcasting rules apply.
See Also
--------
ang2pix, pix2ang, vec2pix
Examples
--------
>>> import healpy as hp
>>> hp.pix2vec(16, 1504)
(0.99879545620517241, 0.049067674327418015, 0.0)
>>> hp.pix2vec(16, [1440, 427])
(array([ 0.99913157, 0.5000534 ]), array([ 0. , 0.5000534]), array([ 0.04166667, 0.70703125]))
>>> hp.pix2vec([1, 2], 11)
(array([ 0.52704628, 0.68861915]), array([-0.52704628, -0.28523539]), array([-0.66666667, 0.66666667]))
"""
check_nside(nside)
if nest:
return pixlib._pix2vec_nest(nside, ipix)
else:
return pixlib._pix2vec_ring(nside, ipix)
def pix2vec(nside,ipix,nest=False):
"""pix2vec : nside,ipix,nest=False -> x,y,z (default RING)
Parameters
----------
nside : int, scalar or array-like
The healpix nside parameter, must be a power of 2
ipix : int, scalar or array-like
Healpix pixel number
nest : bool, optional
if True, assume NESTED pixel ordering, otherwise, RING pixel ordering
Returns
-------
x, y, z : floats, scalar or array-like
The coordinates of vector corresponding to input pixels. Scalar if all input
are scalar, array otherwise. Usual numpy broadcasting rules apply.
See Also
--------
ang2pix, pix2ang, vec2pix
Examples
--------
>>> import healpy as hpy
>>> hpy.pix2vec(16, 1504)
(0.99879545620517241, 0.049067674327418015, 0.0)
>>> hpy.pix2vec(16, [1440, 427])
(array([ 0.99913157, 0.5000534 ]), array([ 0. , 0.5000534]), array([ 0.04166667, 0.70703125]))
>>> hpy.pix2vec([1, 2], 11)
(array([ 0.52704628, 0.68861915]), array([-0.52704628, -0.28523539]), array([-0.66666667, 0.66666667]))
"""
if nest:
return pixlib._pix2vec_nest(nside,ipix)
else:
return pixlib._pix2vec_ring(nside,ipix)
